73531637325 has 48 divisors (see below), whose sum is σ = 142189857600. Its totient is φ = 37152820800.

The previous prime is 73531637323. The next prime is 73531637351. The reversal of 73531637325 is 52373613537.

73531637325 is a `hidden beast` number, since 7 + 3 + 5 + 3 + 1 + 637 + 3 + 2 + 5 = 666.

It is not a de Polignac number, because 73531637325 - 2¹ = 73531637323 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73531637323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2853906 + ... + 2879555.

It is an arithmetic number, because the mean of its divisors is an integer number (2962288700).

Almost surely, 2^73531637325 is an apocalyptic number.

73531637325 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73531637325 is a deficient number, since it is larger than the sum of its proper divisors (68658220275).

73531637325 is a wasteful number, since it uses less digits than its factorization.

73531637325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733499 (or 5733488 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 45.

It can be divided in two parts, 735316 and 37325, that added together give a square (772641 = 879²).

The spelling of 73531637325 in words is "seventy-three billion, five hundred thirty-one million, six hundred thirty-seven thousand, three hundred twenty-five".